Eberhard harrsch



EBERHARD HARRSCH, OF. NEW YORK, N. Y.

Letters Patent No. 90,359, dated Mag] 25, 1869.

IMPROVENIENT 113' THE OE COLORS The Schedule referred to in these Letters Ratent and making part of the same.

To all whom we may concern.-

Belt known that I, EBERHABD Hensson, of New York, in the county and State of New York, have invented certain new and useful Improvements in Manufacture of Colors; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to improvements in my patent, March 30, 1869, for manufacture of colors; and, to this end, consists simply in the mixing of the solutions of the ores in question, in nitric, nitro-muriatic, and mnriatic acids, with salts of baryta, strontia, or their equivalents.

To enable others skilled in-the art to which my in- I vention appertains, to make and use the same, I will now describe the ingredients used.

I dissolve the ores of zinc (Franklinite, Franklinite with red oxide of zinc, amorphous zinc-ore, or the re sidnuln, after zinc-white is driven ofl',) in nitric, nitromnriatic, o1" muriatic acids, and mix the solution with soluble salts of baryta, or carbonate of haryta, or the What I claim as new, and desire to secure. by Let tors Patent, is-

The production of colors, by dissolving the ores of zinc in nitric, nitro-mnriatic, or muriatic acids, and

mixing the solution with soluble salts of baryta, or its equivalents, substantially in the manner and for the purpose described.

In testimony that I claim the foregoing as my own, I atfix my signature, in presence-of two witnesses.

Witnesses: EBERHD HARRSOH.

A. S. WORTH, i J no. A. Enms. 

